#include <iostream>
using namespace std;

class A{
	int n;
public:
	A(){ n = 0; }
	A(int n) :n(n){}
	void show(){ cout << "n:" << n << endl; }

	void operator()(){
		cout << "仿函数" << endl;
	}
};

int main(){
	A a;
	a();
	

	while (1);
	return 0;
}